Carbureter.



E. J. THOMPSON.

GAEBURETER.

APPLICATION FILED PEB. s, 1908.

Patented No1/.241, 1908.

E. J. THMPSUM UNiTED srnfrns PATENT onirica.

EDMUND JOHN THOMPSON, OF OTTAWA, ONTARIO, CANADA, ASSIGNOR, BY DIRECT AND lMF/SNE ASSIGNMENTS, OF ONE-FOURTH TO BERTON HERBERT SILLS AND ONE-FOURTH TO RUSSEL SUTHERLAND SMART, OF OTTAWA, CANADA.

CARBURETER.

Specification of Letters Patent.

y Patented Nov. 24, 1908.

Application filed February 6, 1908. Serial No. 414,663.

To all-whom 'it may concern:

Be it known that I, EDMUND J oHN THOMP- son, of the city of Ottawa, in the county of Qarleton, Province of Ontario, Canada, have invented 'certain new and useful Improve l. ments in Carbureters, of 4which the followmatically adjust itself to give a constant and proper proportion of combustible and air at all speeds of the en ine, and which will have means also` control ed by the suction of the engine for regulating the air supply to give the same velocity passing the spray nozzle, at all speeds, further objects being to improve the form of spray nozzle, whereby the combustible may be distributed in the most etlicient manner, and may be sprayed into the air instead of being sucked out of the nozzle by the air.

In carrying out the invention in the em` bodiment illustrated, the spray nozzle consiste of a vertically extending conduit havin a concave basin formed on the top thereo in combination with a convex valve 4piece screwed adjustably on a suitable screw and adapted to co-act with the basin to regulate the flow of combustible.

The spray nozzle is 'located within the air.

conduit and co-active therewith is a vertically movable air controllin member adaptv carburetor, in closed position. F ig'. 2 is the same section with the air controlling member raised and the spray nozzle opened. Fig. 3 is a section along the ine 2 2, Fig. 2. Fig. is a section along the line 33, Fig. 2. Fig. 5 a vertical .section through the air controlling member.` Fig.. G is a top view through the valve iece on the spray nozzle. Fig. 7 is a section a ong the line 4 4, Fig. 6.

Fig. 8 is a sectional detail through the side Y of the v air controlling member.' Fig. 9 is another sectional detail through another pon tion of the same. Fig. 10 is a front View of the sectional detail shown in Fig. 9. Fig.

11 is a sectional detail along the line 55 Fig. 2.v

In the drawings, like letters of reference indicate corresponding parts in each ligure.

Referrin to the drawin s, A represents the nozzle or the combustib e, usually gasolene, consisting, in the embodiment illustrated, of a base portion a secured to the outer casing B of the carbureter, a vertically -extending stem b formed at the topwith a concave basin c and provided in the stem and base portion with aconducting passage-way d, which is connected to the supply pipe e for the combustible, leading to the supply tank located .at a higher level than the carbureter, whereby4 the combustible will be sprayed through the nozzle under the action of ravit (/gentra ly within the passage-way in lthe stem b a cylindrical rod f is provided, adapted to constrict the passage-way, and being held in position by a screw-threaded projecy tion g engaging the base and having at its top, a screw-threaded projection h., which is engaged by the valve piece z', which --latter has a convex under-surface j adapted. to coact with the basin c to regulate thedistribution of the combustible, from around the edge of the said basin.

Around the top'of the rod f a plurality of small auiiiliary passage-ways c are proefl l vided in the stem, symmetrically disp0sedaround the rod and communicating with the passage-way d, whereby the combustible will be sup lied evenly to dierent'points around the asin. y The casing B in the embodiment illustrated, consists of lan upper portion l, having an inner exadtlycylindrical `surface and a lower enlarged. portionlm, having apertures n in the sidethereof for the free admission of air. The interior of the top ofthe upper' portion Z is preferably, provided with screwthreading 0, whereby it might be directly at'- tached to the intake pipe/of the engine.

vertically movable within the casingv is the air controlling memberC. wln'oh'is'j d 2o air controlling member,

45 .fis the slot ends with the 5e to have the fuel 60 piece -z' through the' screw .s extending through a sloty t in the ring, whereby a Islight adjustment in position may be permitted between the member and the ring for the purpose hereinafter ex plained. The ring is provided with projections if. which engagecvertically extending slots l'u in the sides of the casing.

Means arc provided on the air controlling i'nembcr to turn the valve piece 2'. of the spray*` nozzle to correspond with 'the position of thc whereby .the supply of coinoiistible may be always proportional to the supply of air.`

ln the embodiment illustrated, during the tiret. part of the movenient ot the air controliling member, the Valve piece is opened,

through the medium of an inclined slot 13 formed in the cylindrical 'portion p of the member C, and into which a projection l2, formed on the y'alve piece, extends. The

3o lprojection l2 is provided with a bifurcated end ll and as soon as it reachesI the end of the slot, the biturcate'd end is adapted to engage wire to which as its upper end bent inwardly and extender through the movable member, while its lower end is held in an ad- ]ustable block y which ,is supported"bya'e extending through a slot l0 in tne screw member (l. 'lhus .the initial part ot the movement ot the valve piece is controlled -40 by the slot, while the latter partis controlled by the inclined wire, and this wire, being adjustable at its lower end.v enablcsfthe amount ol opening ot the valve for any given position oi the movable member to be adjusted. cylindrical portion 79, Ait will be seen that. the amount o move- 'ment caused by the slot. .is completed before any appreciablcA amount oft air flows past the supply noznle. andthe object of this is nozzle slightly open at the moment when the' f begins to flow past the same, whereby the-nist charge will cont-aiu a Inni-nimm amount ot' combustible.

ln operation ythe initial po on ot the ot' the engine' are shown in Fig. l. the engine being tamed. thc .suction thereof will gradually ra c the air controlling member C and in deine' this will'lurn the valve 55 parts otthii carblireter, prior to the starting ll pon and projection 12.

'reached` the spray -nozzle n'iedium ol' the slot 13.- By the time the end ot'. the cylindricalportion p on the member .Q is` Vwill be open a cer-v tain amount and upon the movement. being' continuedI further, the air will pass around soeces the edges ot the same' und mix with the combustible discharged therefrom and pass into the engine. a desirable liberal supply ot combustible being thus provided on the starting oit' the engine. Upon the engine increasing in speed, the suction will increase and raise the air controlling member C still further, and the conical .sui-tace i' ot this gradually enlarging will cause the supply ot' air to increase, while, at the same time, the upward movement. has turned the valve piece to open the spray nozzlestill further. Thus, as the suction ot the engine increases, the air supply similarly increased, whereby the velocity of the air of the spray nozzle may remain constant and at the same time, thcsupply otl combustible is increased, whereby the combustible mixture passing into the engine may always be of the same quality. It is evident thatin the ordinary running of the engine a position of equilibrium will soon be reached in which the weight of the air controlling member C will just balance the suction of the engine. Should, the engine be slowed down or speeded up for any purpose the supply ot air and combustible will be increased or decreased to correspond, thus always insiiring that the proper mixties desired. The speed of the engine will, of course, ybe controlled'by the throttle in the Well known manner.' The adjustment between the supply oit air and the combustible for any particular engine may be accurately made by means ot the block {1/ and .the screw s, that is to say any particular engine on which the carburetet` is'used, is run iirst at'a low speed and the screw s is loosened and the member (l turned until theh'combustible mixture is found to be ot' the propel quality. The screw s is then tightened, and the engine run at high speed, raising the member (l. The screw is then dnlooscned and the block y/ adjusted. untilthe mixture is found to be ot the proper quality at. this speed.` It will thus be tound that the mixture between the intermediate speeds will be of the proper quality asthe inclined wire tu will open the Valve piece a proper amount t'or each ot' the intermediate speeds.

lt might be pointed out that the spray )nozzle possesses novel features itself apart from its particular use in the air controlling member. These are in the methodot distributing the combustible from lheperiphcry of the basin controlled bythe convex valvepiece. The combustible is t'orced through the ,nozzle from the supply tank by gravity passingvl air instead ot being sucked out thereby. It. might also be pointed out that the air controlling member C possesses distinct and novel advantages itself apart from the combination, i of the engine increases it automatically inture supplied to-"the engine in the quanticon'ib'ination with i and is sprayed into the namely that, as the suction creases the area of the passage-way in the air conduit, whereby the velocity of the air at the spray nozzle may always remain constant, although the amount supplied increases. r

The bas'in of the spray nozzle, in addition to per-ormingthe function of distributing the combustible, serves as a baiiie plate for the air to enable the regulation to be made by the conical controlling member` In fact the basin and controlling member really orm a gravity-seated valve for the air conuit.

While, therefore, the different parts of the carbureter have been shown inwa particular combination herein, and while the combination only possesses a maximum efiiciency when operated together, yet, the different I features and elementsthereof possess novelty as hereinafter claimed.

lVhat I claim as my invention iszl. In a carbureter, and in combination a spray nozzle, a rotatable member controlling the passage of combustible therethrough, a movable air-controlling membei actuated automatically by the suction of the engine and means operated by the movement of the aircontrolling member for rotating the said controlling member.

2. In a carbureter, and in combination, a spray nozzle, a rotatably-mounted valve piece therefor, a movable member actuated automatically by the suction of the engine and controlling the passage of air through the carbureter, and means on said movable member, for turning the valve to open and closed position.

3. In a carbureter, and in combination, a

radially-distributing spray nozzle, a valvepiece controlling the passage of liquid through the same, and rotatably about an axis substantially normal to the plane in which the spray is distributed, a movable member actuated. automatically by the suction o the engine-and controlling the air passing through the vcarbureter and means operated by the movement thereof for opening and closing the valvey piece.

4. In a carbureter, and in combination, a spray nozzle, a rotatable member controlling the passage of combustible therethrough, a movable, air-controlling member and an inclined member thereon connected to the rotatable controlling member, adapted, on movement of the movable member, to move the rotatable member to open and closed position.

5. In a carbureter, and in combination, a. spray nozzle, a rotatable member controlling the passage of combustible therethrough; a movable, air-coi'itrollin'g member and an @lined member thereon connected to the rotatable controlling member, adapted, on movement ot' the movable member, to move the' rotatable member to open and closed position, and means for adjusting the inclination of said inclined member.

6. In a carbureter and in combination, a movable, air-controlling member adapted to `bereciprocated in a straight line, a spray n'bzzle Within the same, a rotary valve piece for the spray nozzle having a projection thereon With a bifurcatedend, and an inclined wire carried by the air-controlling member 'engaging the bifurcated end of said projection.

7. In a carbureter and in combination, a longitudinally movable, air-controlling member, a ring adjustably connected to the same having projections therein, a casing having longitudinal slots therein, into which the projections are adapted to extend and adapted to prevent rotary movement of the air-controlling member, a spray nozzle within the movable member, a rotary valve piece therefor and inclined means on the movable member engaging the valve iece.

8. A carbureter inclu ing a casing, a spray nozzle within the same having an enlarged top portion, a valve piece for the spray nozzle, a longitudinally movable,tubular, air-controlling member extending about the spray nozzle formed with the inner cylindrical por tion of substantially equal diameter With the top of the spray nozzle, into which the said top is adapted to extend when the air-controlling member is in closed position,` a lower conical portion, and means carried byy the air-controlling member for actuating the valve piece of the spray nozzle.

9. Vnrscarbureter including a casing, a spray'nozzle in the same having an enlarged top portion, a rotary valve piece for the spray nozzle havin slidable, air-contro ling member extending about the spray nozzle and formed with a cylindrical portion of equal diameter with the top of the spray nozzle, into which the said top is adapted to extend when the member is in closed position, the said cylindrical portion having an inclined groove formed in the sides thereof into which the projection on the valve piece is adapted to extend, the said air-controlling member-having a gradually enlarged, lower portion and inclined means on said lower portion tor engaging the projection when it passes out of the groove.

I n witness whereof I have hereunto set my hand in the presence of two witnesses.

EDMUND JOHN THOMPSON.

a projection thereon, a 

